The word and the morpheme.Word is the central LU:1. it is easily distinguished by native speakers2. it is autonomous3. it has grammatical forms and a certain function in the sentence4. it could form a sentence5. it could be broken down into smaller partsthe morpheme is the smallest LU:1. it is not autonomous2. it can function only as a part of word3. it doesn't posses grammatical categories or any function in the sentence4. it can't be broken down into meaningful parts. In can be broken down only into phonemes.

THIS IS A DIFFICULT QUESTION TO ANSWER.I'M DEFINITELY SURE THAT HAPPINESS CAN'T MEAN THE SAME TO ALL THE PEOPLE.
IT IS SOMETHING THAT LIVES INSIDE EACH OF US.YOU SHOULD CAREFULLY THINK ABUOT THIS.
IT'S VERY SERIOUS